The Differences in Phytoplankton Community Structure of Pond Waters Between Pemalang and Brebes, Central Java, Indonesia

2017 ◽  
Vol 23 (7) ◽  
pp. 6402-6405 ◽  
Author(s):  
Benny Diah Madusari ◽  
Jafron Wasiq Hidayat ◽  
Dwi Edy Wibowo ◽  
Chalimah Muhammad
Keyword(s):  
Community Structure ◽  
Phytoplankton Community ◽  
Phytoplankton Community Structure ◽  
Central Java

scholarly journals Phytoplankton community structure in Menjer Lake, Central Java

2021 ◽  
Vol 869 (1) ◽  
pp. 012037
Author(s):  
F Sulawesty ◽  
G P Yoga ◽  
L Subehi ◽  
R Rosidah
Keyword(s):  
Community Structure ◽  
Phytoplankton Community ◽  
Diversity Index ◽  
Nutrient Content ◽  
Cell Counting ◽  
Phytoplankton Community Structure ◽  
Nitrogen And Phosphorus ◽  
Central Java ◽  
Phytoplankton Communities ◽  
Ecological Pressure

Abstract The occurrence of land changes around Lake Menjer, Central Java Province will affect the condition of water quality subsequently will affect biota, including phytoplankton. The purposes of study was to analyze the composition and abundance of phytoplankton in Menjer Lake regarding to nutrient content i.e. nitrogen and phosphorus. Observations on the phytoplankton community were conducted in July and October 2019 at six locations in Menjer Lake. Water samples were taken at the water surface as much as 10 L filtered using plankton net. Identification was carried out under the inverted microscope Diaphot 300. The abundance was calculated using the Sedgwick Rafter cell counting (SRCC) method. Analysis of the phytoplankton community structure was derived by calculating the Diversity Index, Evenness Index, and Simpson Dominance Index. The nutrient content in Menjer Lake influences the structure of phytoplankton communities quantitatively and qualitatively. Observation showed that the diversity of phytoplankton was low and there was one species dominanted, the result explained that the phytoplankton community in Menjer Lake is unstable and there is ecological pressure on the community. It can be concluded that the improvement of environmental conditions around Menjer Lake is the basis for the sustainable management of Menjer Lake.

scholarly journals Phytoplankton community structure in the Estuary of Donan River, Cilacap, Central Java, Indonesia

2018 ◽  
Vol 19 (6) ◽  
pp. 2104-2110
Author(s):  
HESTI PRATIWI ◽  
ARIO DAMAR ◽  
SULISTIONO SULISTIONO
Keyword(s):  
Community Structure ◽  
Phytoplankton Community ◽  
Short Communication ◽  
Morphological Characters ◽  
Single Specimen ◽  
Phytoplankton Community Structure ◽  
Wildlife Sanctuary ◽  
Central Java ◽  
Southern Thailand ◽  
Made In

Chuaynkern Y, Nurngsomsri P, Chuaynkern C, Duengkae P, Karaphan S. 2018. Short Communication: Cyrtodactylus elok Dring, 1979 (Sauria, Gekkonidae): A first country record for Thailand. Biodiversitas 19: 2111-2117. The present work reports a new country record for Thailand of the bent-toed gecko Cyrtodactylus elok Dring, 1979 based on a single specimen which was collected from Hala‒Bala Wildlife Sanctuary, Narathiwat Province (southern Thailand). The Thai specimen shows morphological characters similar to C. elok as follows: 12-14 supralabials, 10-11 infralabials, seven tubercles across midbody, 49 ventral scales, enlarged femoral scales absent, tubercles on forelimbs absent, ventrolateral fold poorly defined, and large tubercles of dorsolateral caudal rows. The species was previously known from the discovery made in Malaysia. This addition brings the number of Thai prehensile-tailed species to three. Morphological and distributional maps are provided.

Seasonal changes in phytoplankton community structure in a bioluminescent lagoon, St. Croix, US Virgin Islands

2018 ◽  
Vol 81 (2) ◽  
pp. 109-124 ◽  
Author(s):  
JL Pinckney ◽  
C Tomas ◽  
DI Greenfield ◽  
K Reale-Munroe ◽  
B Castillo ◽  
...  
Keyword(s):  
Community Structure ◽  
Seasonal Changes ◽  
Phytoplankton Community ◽  
Virgin Islands ◽  
Phytoplankton Community Structure ◽  
Us Virgin Islands

scholarly journals Response of ocean phytoplankton community structure to climate change over the 21st century: partitioning the effects of nutrients, temperature and light

2010 ◽  
Vol 7 (12) ◽  
pp. 3941-3959 ◽  
Author(s):  
I. Marinov ◽  
S. C. Doney ◽  
I. D. Lima
Keyword(s):  
Climate Change ◽  
Community Structure ◽  
Sea Ice ◽  
Phytoplankton Biomass ◽  
Phytoplankton Community ◽  
Vertical Mixing ◽  
Phytoplankton Community Structure ◽  
Marginal Sea ◽  
Small Phytoplankton ◽  
The Impact

Abstract. The response of ocean phytoplankton community structure to climate change depends, among other factors, upon species competition for nutrients and light, as well as the increase in surface ocean temperature. We propose an analytical framework linking changes in nutrients, temperature and light with changes in phytoplankton growth rates, and we assess our theoretical considerations against model projections (1980–2100) from a global Earth System model. Our proposed "critical nutrient hypothesis" stipulates the existence of a critical nutrient threshold below (above) which a nutrient change will affect small phytoplankton biomass more (less) than diatom biomass, i.e. the phytoplankton with lower half-saturation coefficient K are influenced more strongly in low nutrient environments. This nutrient threshold broadly corresponds to 45° S and 45° N, poleward of which high vertical mixing and inefficient biology maintain higher surface nutrient concentrations and equatorward of which reduced vertical mixing and more efficient biology maintain lower surface nutrients. In the 45° S–45° N low nutrient region, decreases in limiting nutrients – associated with increased stratification under climate change – are predicted analytically to decrease more strongly the specific growth of small phytoplankton than the growth of diatoms. In high latitudes, the impact of nutrient decrease on phytoplankton biomass is more significant for diatoms than small phytoplankton, and contributes to diatom declines in the northern marginal sea ice and subpolar biomes. In the context of our model, climate driven increases in surface temperature and changes in light are predicted to have a stronger impact on small phytoplankton than on diatom biomass in all ocean domains. Our analytical predictions explain reasonably well the shifts in community structure under a modeled climate-warming scenario. Climate driven changes in nutrients, temperature and light have regionally varying and sometimes counterbalancing impacts on phytoplankton biomass and structure, with nutrients and temperature dominant in the 45° S–45° N band and light-temperature effects dominant in the marginal sea-ice and subpolar regions. As predicted, decreases in nutrients inside the 45° S–45° N "critical nutrient" band result in diatom biomass decreasing more than small phytoplankton biomass. Further stratification from global warming could result in geographical shifts in the "critical nutrient" threshold and additional changes in ecology.

Sign in / Sign up

Export Citation Format

Share Document